KR102386492B1 - Lens assembly and optics device with the same - Google Patents

Abstract

In the lens assembly structure including a plurality of lens assemblies according to various embodiments of the present disclosure, at least some of the plurality of lens assemblies include a first lens group having a positive refractive power or a negative refractive power. ; a second lens group having a positive refractive power; and a bending structure for bending a path of light from the first lens group to correspond to an optical axis direction of the second lens group, wherein the bending structure includes a path of light from the first lens group and a path of light from the second lens group. disposed on a path, the optical axes of the first lens groups disposed in each of the at least some lens assemblies meet at a point, and the optical axes of the second lens groups disposed in each of the at least some lens assemblies form a triangle can be formed
The lens assembly as described above and an optical device including the lens assembly may be implemented in various ways according to embodiments.

Description

LENS ASSEMBLY AND OPTICS DEVICE WITH THE SAME

Various embodiments of the present invention relate to an optical device, for example, a lens assembly and an optical device including the same.

Optical devices, for example, cameras capable of taking images or moving pictures have already been widely used. Recently, a digital camera or a video camera having a solid-state image sensor such as a Charge Coupled Device (CCD) or a Complementary Metal-Oxide Semiconductor (CMOS) has been widely used. Optical devices employing a solid-state image sensor (CCD or CMOS) are gradually replacing film-type optical devices because they are easier to store, reproduce, and move images than film-type optical devices.

In order to obtain high quality images and/or moving pictures, a plurality of lenses may be used. A lens assembly including a combination of a plurality of lenses, for example, has a low F-number and a small aberration, so that higher quality (higher resolution) images and/or moving images may be acquired. To obtain a low F-number, low aberration, multiple lenses may be required. Such an optical device has been generally composed of a device specialized for photographing, such as a digital camera, but recently, it is also mounted on a miniaturized electronic device such as a mobile communication terminal.

In order to photograph an optical device such as a lens assembly in all directions, at least one ultra-wide-angle optical device is required. When an optical device having one wide angle of view is used, the image quality deteriorates at the periphery of the image and blind spots occur, and it can be manufactured in a large size compared to performance. In the case of an optical device having two wide-angle angles of view, image quality deterioration and heat generation may occur in the periphery of the image, and parallax (distance between photographing devices) may be widened. In the case of an optical device having three or more wide angles of view, deterioration of peripheral image quality may be improved, but heat generation is large due to a problem such as an image sensor location, and it may be difficult to reduce parallax (distance between photographing devices).

An optical device according to various embodiments of the present disclosure includes a configuration of three or more lens assemblies connecting at least three optical system structures and three or more image sensors to improve image periphery quality problems and limit of the number of pixels in a moving picture. It is intended to improve heat generation and jet lag problems and peripheral performance.

An optical device according to various embodiments of the present disclosure may reduce a parallax distance according to the length and arrangement of a plurality of optical system structures, thereby solving the problem of short-range stitching image defects.

The optical device according to various embodiments of the present disclosure is intended to realize the arrangement of the image sensor and the heat dissipation structure, which can reduce the deterioration of the image sensor that occurs during video recording for a long time.

An optical device according to various embodiments of the present disclosure provides a lens assembly capable of acquiring high-resolution images and/or moving pictures while having good optical characteristics and thus being easily mounted in a miniaturized electronic device.

In the lens assembly structure including a plurality of assemblies according to various embodiments of the present disclosure, at least some of the lens assemblies among the plurality of lens assemblies may include a first first having a positive refractive power or a negative refractive power. lens group; a second lens group having positive refractive power; and a bending structure for bending a path of light from the first lens group to correspond to an optical axis direction of the second lens group, wherein the bending structure includes a path of light from the first lens group and a path of light from the second lens group. The optical axes of the first lens groups disposed on a path, each of the at least some lens assemblies, meet at a point, and the optical axes of the second lens groups disposed on each of the at least some lens assemblies are triangular. can form.

In an optical device including a plurality of optical system structures according to various embodiments of the present disclosure, at least some of the plurality of optical system structures may include: a case having an open front; a lens assembly disposed in the case and including a first lens group composed of a combination of a plurality of lenses, a second lens group, and a bending structure for bending an optical path of the first lens group and transmitting the first lens group to the second lens group; and a seating part disposed in the case and configured to seat the first lens group or the second lens group, wherein the outermost lens of the first lens is exposed to the opening and disposed in each of the optical system structures The optical axes of the first lens groups may be perpendicular to the optical axes of the second lens groups.

An optical device according to various embodiments of the present disclosure includes n or more identical optical system structures including a lens group (n ≥ 3), and the optical axis f' of each lens group of the optical system structures is on the same plane and a line segment connecting the intersection points e' where the lines extending the respective optical axes f' meet may form a regular n-gonal shape.

The optical device according to various embodiments of the present invention includes three optical system structures, and by disposing the lens assembly and the image sensor in each optical system structure in a curved shape, heat generation and parallax problems and resolution performance of the center and the periphery are reduced. can be improved

The optical device according to various embodiments of the present disclosure may reduce a parallax distance regardless of the size of a plurality of optical system structures (eg, lens assemblies) and may design a low sensitivity of the optical system.

The optical device according to various embodiments of the present disclosure may reduce deterioration of the image sensor that occurs during video recording for a long period of time by designing the position of the image sensor and the heat dissipation structure at least partially disposed on the outer shell.

Since the lens assembly according to various embodiments of the present disclosure has good optical characteristics, it can be easily mounted in a miniaturized electronic device and can acquire high-resolution images and/or moving pictures.

The lens assembly according to various embodiments of the present disclosure may obtain a wide-angle and high-resolution bright image by adjusting the radius of curvature of the refracting surfaces of the lenses and making them aspherical.

1 is an exploded perspective view illustrating a plurality of optical system structures 100 and an optical axis adjusting structure 160 of an optical device 10 according to various embodiments of the present disclosure.
2 is an exploded perspective view showing the lens assembly 100 according to one of various embodiments of the present invention.
3 is a diagram illustrating an optical device 10 including a plurality of lens assemblies 100 according to various embodiments of the present disclosure. 3A is a perspective view illustrating a coupling structure of the lens assembly 110 , and FIG. 3B is a top view illustrating the coupling structure of the lens assembly 110 .
4 is a view illustrating an optical device including a plurality of lens assemblies 100 according to various embodiments of the present disclosure.
5 is a cross-sectional view illustrating an arrangement structure of the lens assembly 110 according to various embodiments of the present disclosure.
6 is a cross-sectional view illustrating an arrangement relationship of the optical system structure 100 according to various embodiments of the present disclosure.
7 is a cross-sectional view illustrating an arrangement structure of one lens assembly 110 according to various embodiments of the present disclosure.
8 is a cross-sectional view in which the structure of the lens assembly 110 of FIG. 7 is sequentially arranged on a straight line, according to various embodiments of the present disclosure.
9 is a graph illustrating a resolution deviation of the arrangement structure of the lens assembly of FIGS. 7 and 8 according to various embodiments of the present disclosure;
10A is a graph illustrating spherical aberration of the lens assembly 110 according to one of various embodiments of the present disclosure. 10B is a graph illustrating astigmatism of the lens assembly 110 according to one of various embodiments of the present disclosure. 10C is a graph illustrating a distortion rate of the lens assembly 110 according to one of various embodiments of the present disclosure.
11 is a cross-sectional view illustrating an arrangement structure of one lens assembly 210 according to various embodiments of the present disclosure.
12A, 12B, and 12C are graphs illustrating spherical aberration, astigmatism, and distortion rate of the structure of the lens assembly 210 of FIG. 11 according to various embodiments of the present disclosure.
13 is a cross-sectional view illustrating an arrangement structure of one lens assembly 310 according to various embodiments of the present disclosure.
14A, 14B, and 14C are graphs illustrating spherical aberration, astigmatism, and distortion rates of the structure of the lens assembly 310 of FIG. 13 according to various embodiments of the present disclosure.
15 is a cross-sectional view illustrating an arrangement structure of one lens assembly 410 according to various embodiments of the present disclosure.
16A, 16B, and 16C are graphs illustrating spherical aberration, astigmatism, and distortion rates of the structure of the lens assembly 410 of FIG. 15 according to various embodiments of the present disclosure.
17 is a top plan view illustrating an optical device 510 including a plurality of lens assemblies according to various embodiments of the present disclosure.
18 is a top plan view illustrating an optical device 610 including a plurality of lens assemblies according to various embodiments of the present disclosure.
19 is a cross-sectional view illustrating an optical device 710 including a plurality of lens assemblies, according to various embodiments of the present disclosure.
20 is a top plan view illustrating an optical device 710 including a plurality of lens assemblies including a heat dissipation structure 730 according to various embodiments of the present disclosure.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. However, it is not intended to limit the technology described in this document to specific embodiments, and it should be understood to include various modifications, equivalents, and/or alternatives of the embodiments of this document. . In connection with the description of the drawings, like reference numerals may be used for like components.

In this document, expressions such as "have," "may have," "includes," or "may include" refer to the presence of a corresponding characteristic (eg, a numerical value, function, operation, or component such as a part). and does not exclude the presence of additional features.

In this document, expressions such as "A or B," "at least one of A or/and B," or "one or more of A or/and B" may include all possible combinations of the items listed together. . For example, "A or B," "at least one of A and B," or "at least one of A or B" means (1) includes at least one A, (2) includes at least one B; Or (3) it may refer to all cases including both at least one A and at least one B.

As used herein, expressions such as "first," "second," "first," or "second," may modify various elements, regardless of order and/or importance, and refer to one element. It is used only to distinguish it from other components, and does not limit the components. For example, the first user equipment and the second user equipment may represent different user equipment regardless of order or importance. For example, without departing from the scope of the rights described in this document, a first component may be referred to as a second component, and similarly, the second component may also be renamed as a first component.

One component (eg, a first component) is "coupled with/to (operatively or communicatively)" to another component (eg, a second component); When referring to "connected to", it should be understood that the certain element may be directly connected to the other element or may be connected through another element (eg, a third element). On the other hand, when it is said that a component (eg, a first component) is "directly connected" or "directly connected" to another component (eg, a second component), the component and the It may be understood that other components (eg, a third component) do not exist between other components.

The expression "configured to (or configured to)" as used in this document, depending on the context, for example, "suitable for," "having the capacity to ," "designed to," "adapted to," "made to," or "capable of." The term “configured (or configured to)” may not necessarily mean only “specifically designed to” in hardware. Instead, in some circumstances, the expression “a device configured to” may mean that the device is “capable of” with other devices or parts. For example, the phrase "a processor configured (or configured to perform) A, B, and C" refers to a dedicated processor (eg, an embedded processor) for performing the corresponding operations, or by executing one or more software programs stored in a memory device. , may mean a generic-purpose processor (eg, a CPU or an application processor) capable of performing corresponding operations.

Terms used in this document are only used to describe specific embodiments, and may not be intended to limit the scope of other embodiments. The singular expression may include the plural expression unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meanings as commonly understood by one of ordinary skill in the art described in this document. Among the terms used in this document, terms defined in a general dictionary may be interpreted as having the same or similar meaning as the meaning in the context of the related art, and unless explicitly defined in this document, ideal or excessively formal meanings is not interpreted as In some cases, even terms defined in this document cannot be construed to exclude embodiments of the present document.

An electronic device according to various embodiments of the present document may include, for example, a smartphone, a tablet personal computer, a mobile phone, a video phone, and an e-book reader. , desktop personal computer, laptop personal computer, netbook computer, workstation, server, personal digital assistant (PDA), portable multimedia player (PMP), MP3 player, mobile It may include at least one of a medical device, a camera, and a wearable device. According to various embodiments, the wearable device may be an accessory type (eg, a watch, ring, bracelet, anklet, necklace, eyeglass, contact lens, or head-mounted-device (HMD)), a fabric or an integrated garment (HMD). It may include at least one of: electronic clothing), body attachable (eg skin pad or tattoo), or bioimplantable (eg implantable circuit).

In some embodiments, the electronic device may be a home appliance. Home appliances are, for example, televisions, digital video disk (DVD) players, audio devices, refrigerators, air conditioners, vacuum cleaners, ovens, microwave ovens, washing machines, air purifiers, set-top boxes, home automation controls. panel (home automation control panel), security control panel (security control panel), TV box (eg Samsung HomeSync ^TM , Apple TV ^TM , or Google TV ^TM ), game console (eg Xbox ^TM , PlayStation ^TM ), electronic dictionary , an electronic key, a camcorder, or an electronic picture frame.

In another embodiment, the electronic device may include various medical devices (eg, various portable medical measuring devices (eg, a blood glucose monitor, a heart rate monitor, a blood pressure monitor, or a body temperature monitor), magnetic resonance angiography (MRA), magnetic resonance imaging (MRI), Computed tomography (CT), imager, or ultrasound machine, etc.), navigation devices, global navigation satellite system (GNSS), event data recorder (EDR), flight data recorder (FDR), automotive infotainment ) devices, ship electronic equipment (e.g. ship navigation systems, gyro compasses, etc.), avionics, security devices, vehicle head units, industrial or domestic robots, automatic teller's machines (ATMs) in financial institutions. , point of sales (POS) in stores, or internet of things (e.g. light bulbs, sensors, electricity or gas meters, sprinkler devices, smoke alarms, thermostats, street lights, toasters) , exercise equipment, hot water tank, heater, boiler, etc.) may include at least one.

According to some embodiments, the electronic device is a piece of furniture or a building/structure, an electronic board, an electronic signature receiving device, a projector, or various measuring instruments (eg, water, electricity, gas, or a radio wave measuring device). In various embodiments, the electronic device may be a combination of one or more of the various devices described above. The electronic device according to an embodiment may be a flexible electronic device. In addition, the electronic device according to the embodiment of this document is not limited to the above-described devices, and may include a new electronic device according to technological development.

Hereinafter, an electronic device according to various embodiments will be described with reference to the accompanying drawings. In this document, the term user may refer to a person who uses an electronic device or a device (eg, an artificial intelligence electronic device) using the electronic device.

1 is an exploded perspective view illustrating a plurality of optical system structures 100 and an optical axis adjusting structure 160 of an optical device 10 according to various embodiments of the present disclosure. 2 is an exploded perspective view showing the optical system structure 100 according to one of various embodiments of the present invention for each component.

Referring to FIG. 1 , the optical device 10 may include a plurality of optical system structures 100 disposed adjacent to each other for omnidirectional imaging. For example, the optical system structure 100 may be composed of at least three, and each optical system structure 100a, 100b, 100c includes a lens assembly having an angle of view of 120 to 180 degrees to constitute a 360-degree photographing device. can

According to various embodiments, the optical system structure 100 constituting the optical device 10 includes a first optical system structure 100a, a second optical system structure 100b disposed adjacent to the first optical system structure 100a, and A third optical system structure 100c disposed adjacent to the second optical system structure 100b may be included. Each of the optical system structures 100a, 100b, and 100c constituting the optical device 10 may be the same as the optical system structure 100 of FIG. 1 .

In the central region of the three optical system structures 100a, 100b, and 100c, an optical axis for compensating the rotational error amount of the image sensors 114a, 114b, and 114c disposed in each of the optical system structures 100a, 100b, and 100c An adjustment structure 160 may be disposed.

Referring to FIG. 2 , an optical device (optical device 10 of FIG. 1 ) according to one of various embodiments of the present disclosure may include at least one optical system structure 100 in which a lens assembly 110 is disposed. there is.

According to various embodiments, each of the optical system structures 100a, 100b, and 100c among the plurality of optical system structures 100 includes a plurality of lenses 111a, 111b, 111c, and 111d having the same optical axis O'. A first lens group 111 including, and a refractive structure 113 disposed on a light path of the first lens group 111 and the second lens group 112 .

According to various embodiments, the first lens group 111 may include a plurality of lenses 111a, 111b, 111c, and 111d, and the first region S1 of the optical system structure 100 is a first It may include a case 120 that covers the lens group 111 and a first seating part 141 that supports the first lens group 111 disposed inside the case 120 .

According to various embodiments, the first lens group 111 may include a plurality of lenses 111a, 111b, 111c, and 111d having the same optical axis O'. For example, the plurality of lenses 111a, 111b, 111c, and 111d are sequentially arranged to face the refraction structure 113 from the subject side, the first lens 111a, the second lens 111b, and the third It may include a lens 111c and a fourth lens 111d. Each of the first to fourth lenses 111a, 111b, 111c, and 111d may include a plastic lens, and of the refractive structure 113 to form one optical axis O' of the lens assembly 110. It may be arranged in a state aligned with one surface and the optical axis. The refractive structure 113 may be disposed in an optical axis alignment with the first lens group 111 and/or the image sensor 114 .

According to various embodiments, the first lens group 111 may have a positive refractive power or a negative refractive power. The plurality of lenses of the first lens group 111 may include a plurality of lenses having a negative refractive power and at least one lens having a positive refractive power sequentially from the subject side. . For example, the first lens 111a constituting the first lens group 111 has a negative refractive power, and the second lens 111b has a negative refractive power, The third lens 111c may have a negative refractive power, and the fourth lens 111d may have a positive refractive power.

When parallel light is incident on a lens having a negative refractive power, the light passing through the lens may spread. For example, a lens having a negative refractive power may be a lens based on the principle of a concave lens. On the other hand, when parallel light is incident on a lens having a positive refractive power, the light passing through the lens may be focused. For example, a lens having positive refractive power may be a lens based on the principle of a convex lens.

As the distance between the first to fourth lenses 111a , 111b , 111c , and 111d with other adjacent lenses (eg, air gap) is smaller, the overall length of the lens assembly 110 may be reduced. According to various embodiments, an interval between the lenses may be designed in various ways according to optical characteristics (eg, aberration characteristics, wide-angle characteristics, and/or brightness characteristics) required for the lens assembly 110 .

According to various embodiments, the lens assembly 110 may include an aperture (not shown) disposed on one surface of the first lens 111a facing the subject. By adjusting the size of the aperture, the amount of light reaching the imaging surface 114a of the image sensor 114 may be adjusted.

According to various embodiments, the refractive structure 113 is disposed between the first lens group 111 and the second lens group 112 to move the optical axis O' of the first lens group 111 . It may be bent to provide the second lens group 112 . For example, the refractive structure 113 may vertically bend the light direction of the first lens group 111 to transmit it to the second lens group 112 . The optical axis O' of the first lens group 111 and the optical axis O" of the second lens group 112 may be perpendicular. According to an embodiment of the present invention, By providing the refraction structure 113 , the mounting space in which the second lens group 112 is disposed can be efficiently disposed, so that the slim optical system structure 100 can be implemented.

According to various embodiments, the second lens group 112 may include a plurality of lenses 112a, 112b, and 112c, and the second region S2 of the optical system structure 100 is a second lens group. It may include a case 120 that covers the 112 and a second seating part 142 that supports the second lens group 112 disposed inside the case 120 .

According to various embodiments, the second lens group 112 may include a plurality of lenses 112a, 112b, and 112c having the same optical axis O″. For example, the plurality of lenses ( 112a , 112b , and 112c may include a fifth lens 112a , a sixth lens 112b , and a seventh lens 112c sequentially arranged from the refractive structure 113 toward the image sensor 114 . Each of the fifth to seventh lenses 112a, 112b, and 112c may include a plastic lens, and one surface of the refractive structure 113 to form one optical axis O″ of the lens assembly 110 and the optical axis may be aligned. The refractive structure 113 may be disposed in an optical axis alignment with the second lens group 112 and the image sensor 114 .

According to various embodiments, the second lens group 112 may have a positive refractive power. The plurality of lenses of the second lens group 112 are sequentially arranged from the side of the refractive structure 113, and have at least one positive refractive power and/or at least one negative lens. It may include a lens having refractive power. When parallel light is incident on a lens having a negative refractive power, the light passing through the lens may spread. For example, a lens having a negative refractive power may be a lens based on the principle of a concave lens. On the other hand, when parallel light is incident on a lens having a positive refractive power, the light passing through the lens may be focused. For example, a lens having positive refractive power may be a lens based on the principle of a convex lens.

As the distance between the fifth to seventh lenses 112a , 112b , and 112c with other adjacent lenses (eg, air gap) decreases, the overall length of the lens assembly 110 may decrease. According to various embodiments, an interval between the lenses may be designed in various ways according to optical characteristics (eg, aberration characteristics, wide-angle characteristics, and/or brightness characteristics) required for the lens assembly 110 .

According to various embodiments, in order to align and support the first lens group 111 of the optical system structure 100 , the first region S1 of the optical system structure 100 forms the first lens group 111 . It may include a case 120 to cover and a first seating part 141 for supporting the first lens group 111 disposed inside the case 120 . The case 120 constituting the first region S1 of the optical system structure 100 may include a front end case 121 and a first portion 122a of the middle case 122 .

According to various embodiments of the present disclosure, the front side of the front case 121 may be opened, and the outermost lens (eg, the first lens 111a) of the first lens group 111 is at least a portion of the front side. It is mounted to form a, it is possible to close the open front of the front end case (121). The front end case 121 is for accommodating the first lens group 111 and the like, and at least a part thereof may be made of a conductive material and/or a plastic material. For example, the front end case 121 may include sidewalls forming the outer surface of the optical system structure 100, and the portion exposed to the exterior of the optical device is made of a conductive metal material and/or a plastic material. can be manufactured.

According to various embodiments, the first portion 122a of the middle case 122 may have an open front surface, and the first lens group 111 and the refractive structure 113 may be combined with the front end case 121 . It can provide an area in which the The middle case 122 may include a second part 122b extending from the first part 122a and accommodating the second lens group 112 . The first part 122a and the second part 122b may be opened to face different directions to accommodate the respective lens groups 111 and 112 . For example, the central axis of the first part 122a and the central axis of the second part 122b may be disposed in a direction perpendicular to each other. A recess corresponding to the shape of the refraction structure 113 may be formed inside the first portion 122a of the middle case 122 to seat the refraction structure 113 therein.

According to various embodiments, the first seating part 141 disposed inside the case 120 supports the plurality of lenses 111a , 111b , 111c and 111d constituting the first lens group 111 , and It may include recesses of different sizes for seating. The recesses formed in the first seating part 141 may be manufactured in a circular groove shape corresponding to the sizes of the lenses 111a, 111b, 111c, and 111d. For example, a front surface of the recesses formed in the first seating part 141 has a recess corresponding to the shape of the first lens 111a (eg, the largest recess in the first lens group 111 ). recess) and a recess corresponding to the shape of the fourth lens 111d (eg, the smallest recess among the first lens group 111 ) on the rear surface. The first seating part 141 may be inserted and fixed into the opening of the front end case 121 and/or the first part 122a of the middle case 122 corresponding to the shape of the first seating part 141 . there is.

According to various embodiments, the first region S1 of the optical system structure 100 is disposed inside the case 200 , and a support member 151 that additionally supports the first seating part 141 and an external foreign substance It may include a sealing member 152 to prevent penetration. The support member 151 is disposed between the first seating part 141 and the middle case 122 so that the first seating part 141 is closely supported to the middle case 122, and at the same time, the It may be manufactured to form a gap between the fourth lens 111d and the refractive structure 113 . The sealing member 152 may be disposed in an area around the opening of the front end case 121 to bring the first lens 111a exposed to the outside in close contact with the front end case 121 . The support member 151 and the sealing member 152 may include a material having an elastic material.

According to various embodiments, in order to align and support the second lens group 112 of the optical system structure 100 , the second region S2 of the optical system structure 100 forms the second lens group 112 . It may include a case 200 for covering and a second seating part 142 for supporting the second lens group 112 disposed inside the case 200 . The case 200 constituting the second region S2 of the optical system structure 100 may include a second portion 122b of the middle case 122 and a rear end case 123 .

According to various embodiments, one surface (eg, one surface facing the second lens group 112 ) of the second part 122b of the middle case 122 may be opened, and the rear end case 123 and In combination, an area in which the second lens group 112 is accommodated may be provided. A central axis of the second part 122b of the middle case 122 and a central axis of the second part 122b may be disposed in a perpendicular direction to each other.

According to various embodiments, the rear end case 123 may have an open front side, and after the second lens group 112 is seated, it is combined with the second part 122b of the middle case 122, The open front can be closed. The rear end case 123 is for accommodating the second lens group 112 and the like, and at least a portion thereof may be made of a conductive material and/or a plastic material. For example, the rear case 123 may include sidewalls forming an outer surface of the optical system structure 100 , and a portion exposed to the exterior of the optical device is made of a conductive metal material and/or a plastic material. can be made with

According to various embodiments, the second seating part 142 integrally formed inside the rear end case 123 has different sizes capable of supporting and seating a plurality of lenses constituting the second lens group 112 . may include recesses. The recesses formed in the second seating part 142 may be manufactured in a circular groove shape corresponding to the sizes of the lenses 112a, 112b, and 112c.

According to various embodiments, the optical system structure 100 may include an image sensor 114 disposed to face the second lens group 112 . For example, in the optical system structure 100, the rear end case 123 in the shape of a cylindrical bracket accommodating the second lens group 112 is disposed on the upper side with respect to the printed circuit board 115 including the opening 115a. can be

According to various embodiments, the image sensor 114 may be accommodated and seated in the opening 115a of the printed circuit board 115 . An image sensor carrier (not shown) may be further included in the opening 115a of the printed circuit board 115 so that the image sensor 114 is received and supported by the printed circuit board 115 . In order to accommodate the image sensor 114 in the printed circuit board 115 , there is no need for a separate component, thereby reducing the manufacturing cost of the product and reducing the thickness of the product to make it smaller or slimmer.

According to various embodiments, various parts necessary for driving a camera lens and storing an image may be mounted outside the image sensor 114 seated in the opening 115a of the printed circuit board 115 . The component may include, for example, a flash memory, a gyro sensor, an automatic focus driving chip (OIS-driverIC), and the like. The parts may be surrounded by a shield can (not shown) made of a metal material.

According to an embodiment of the present invention, a connector 116 connected to other components of the electronic device 10 to the outside of the image sensor 114 seated in the opening 115a of the printed circuit board 115, and A conductive tape 117 disposed under the connector 116 may be included.

According to various embodiments, the optical system structure 100 may include a heat dissipation structure 130 disposed to face the image sensor 114 . Referring to FIG. 6 , when viewed from the upper side of the optical system structure 100 , the heat dissipation structure 130 may be disposed between the circle A and the circle C. The heat dissipation structure 130 is placed between one plate 131 and the first heat dissipation material 132 and the second heat dissipation material 132 are respectively disposed, and the heat source and/or image sensor of the printed circuit board 115 ( 114) can dissipate the heat transferred from it. For example, the heat source of the printed circuit board 115 may be at least one chip disposed on the printed circuit board 115 , and may include a PMIC, PAM, AP, CP, or the like.

According to various embodiments, the first heat dissipation material 132 and the second heat dissipation material 132 may include, for example, a heat pipe, a solid heat dissipation sheet, or a liquid heat dissipation paint. Here, the material of the heat pipe, the solid heat dissipation sheet, or the liquid heat dissipation paint may include, for example, a high heat conductive material such as graphite, carbon nanotubes, a natural regenerated material, silicon, or silicon.

According to various embodiments, the first heat dissipation material 132 may be disposed to face the printed circuit board 115 with a predetermined gap therebetween, and the first heat dissipation material 131 and/or the first heat dissipation material 131 may be disposed to face each other. 2 The heat dissipation material 132 may be disposed in contact with the plate 131 . A planar gap layer including a gap is disposed between the first heat dissipation material 131 and the printed circuit board 115 so that the heat diffused from the heat source is diffused through the gap layer, so that the first heat dissipation material 131 ), and then, after being evenly distributed over the entire surface of the plate 131 and/or the second heat dissipation material 133, it can be diffused to the outside. As another example, the plate may include a metal material, and for example, may include Al or Mg. Since the metal material has heat diffusion performance, it enables additional heat distribution.

Referring back to FIG. 1 , the optical system structure 100 according to various embodiments may include an optical axis adjustment structure 160 , and the optical axis adjustment structure 160 includes one plate 161 and the plate 161 . ) may include a plurality of groove portions 162 formed on one surface. The centers of the grooves 162 may be arranged to correspond to the centers of the grooves 112a protruding outside the middle case 122 of the respective optical system structures 100 . For example, the one groove 122a and the center of the groove portion 162 may be arranged on the same line, and an imaginary line connecting the centers of the grooves 122a and the centers of the groove portions 162 are connected. The grooves 122a and/or the grooves 162 may be arranged such that an imaginary line forms an equilateral triangle (internal angle is an angle of 120 degrees).

According to various embodiments, the groove 122a of the outer side of the middle case 122 and the groove portion 162 of the optical axis adjustment structure 160 are aligned with each other, and then be bound to each other by a coupling member 163 such as a screw. can The binding process may be adjusted to compensate for a rotation error amount of each of the image sensors.

According to various embodiments, the optical axis adjusting device 160 may be disposed to form one axis on the optical axis of the first lens group 111 of each of the optical system structures 100a, 100b, and 100c. As another example, the image sensor 114 may have a rectangular shape, and the long sides of the imaging planes of the image sensors 114a, 114b, and 114c are the respective optical system structures 100a, 100b, and 100c. The first lens group 111 or the second lens group 112 may be disposed in a direction perpendicular to a plane formed by three optical axes.

3 is a diagram illustrating an arrangement relationship in which a plurality of lens assemblies 110 are arranged according to various embodiments of the present disclosure. 3A is a perspective view illustrating a coupling structure of the lens assembly 110 , and FIG. 3B is a top view illustrating the coupling structure of the lens assembly 110 .

The structure of the lens assembly 110 shown in FIGS. 3A and 3B may be the same as a part or all of the optical system structure 100 including the lens assembly 110 shown in FIGS. 1 or 2 .

3A and 3B, the optical device (for example, the optical device 10 of FIG. 1) has a plurality of optical system structures (eg, the optical system structure of FIG. 2) disposed adjacent to each other for omnidirectional imaging 100)) may be included. For example, the optical system structure 100 may be composed of at least three, and each of the optical system structures 100a, 100b, and 100c includes lens assemblies 110a, 110b, and 110c having a field of view of 120 to 180 degrees. Thus, a 360-degree photographing device can be configured.

According to various embodiments, the lens assembly structure 110 constituting the optical device 10 includes a first lens assembly 110a and a second lens assembly 110b disposed adjacent to the first lens assembly 110a. and a third lens assembly 110c disposed adjacent to the second lens assembly 110b.

When each of the first lens groups 111 disposed in the plurality of lens assemblies 110a, 110b, and 110c according to various embodiments is viewed from above, the optical axes O' of the first lens groups 111 are viewed from above. ) may be arranged to face different directions. For example, the optical axis O' of the first lens groups 111 of each of the three lens assemblies 110a, 110b, and 110c is disposed on the same plane, and each optical axis O meets at a point O ') and the adjacent optical axis O' may be set to 120 degrees.

When the lens assembly having an angle of view of 120 to 180 degrees or more is disposed according to an embodiment of the present invention, since the polar periphery image is not used for the lateral image, deterioration of peripheral image quality is reduced, and accordingly, the center/periphery image deviation is reduced can decrease.

When the second lens groups 112 of the plurality of lens assemblies 110a, 110b, and 110c according to various embodiments are viewed from above, the optical axes O″ of the second lens groups 112 are different from each other. For example, the optical axis O′ of each of the first lens groups 111 and the optical axis O″ of the second lens group 112 of the adjacent optical system structure are It may be set to achieve 30 degrees. Specific details will be described in detail with reference to FIGS. 5 and 6 . As another example, image sensors (not shown) disposed on one surface of the second lens groups 112 may also be disposed to face different directions, and may not be disposed adjacent to each other. Accordingly, heat-generating portions of the image sensors are not disposed to face each other in a short distance, which may be advantageous in performance degradation due to heat generation and limitation of recording time.

4 is a view illustrating an optical device including a plurality of lens assemblies 110 according to various embodiments of the present disclosure. 4A is a perspective view illustrating a coupling structure of the four lens assemblies 110 , and FIG. 4B is a top view illustrating a coupling structure of the four lens assemblies 110 .

The structure of the lens assembly 110 shown in FIGS. 4A and 4B may be the same as a part or all of the optical system structure 100 including the lens assembly 110 shown in FIG. 3 .

4A and 4B , the optical device 10 may include a plurality of optical system structures 100 disposed adjacent to each other for omnidirectional imaging. For example, the lens assembly 110 may be composed of at least four, and each of the three lens assemblies 110a, 110b, and 110c disposed on the same plane is set to an optical system having an angle of view of 120 to 180 degrees to 360 degrees. A photographing device may also be configured. As another example, the fourth lens assembly 110d may be disposed above or below the three lens assemblies 110a, 110b, and 110c.

According to various embodiments, the lens assembly 110 constituting the optical device includes a first lens assembly 110a, a second lens assembly 110b disposed adjacent to the first lens assembly 110a, and the second lens assembly 110a. A third lens assembly 110c disposed adjacent to the lens assembly 110b may be included. The fourth lens assembly 110d may be formed with an optical axis O″′ in a direction perpendicular to a center O of an optical axis O′ of the first to third lens assemblies 110a, 110b, and 110c. For example, the optical axis O″′ of the first lens group 111 of the fourth lens assembly 110d is the first lens group of the first to third lens assemblies 110a, 110b, and 110c. A point O where the optical axes O' of (111) meet and may exist on a straight line passing through the point while being perpendicular to the horizontal plane. The first to third lens assemblies 110a, 110b, and 110c constituting the optical device 10 may be the same as the lens assembly 110 of FIG. 3 , and the fourth optical system structure 110d is illustrated in FIG. 3 . Although the structure of the first lens group 111 of the lens assembly and the structure of the second lens group 112 are the same, the refractive structure 113 may not be included.

According to an embodiment of the present invention, the fourth lens assembly 110d is configured as one, and the first lens group 111 is disposed on the first to third lens assemblies 110a, 110b, and 110c to face the front. However, the present invention is not limited thereto, and may be additionally disposed at the lower portion to face the rear. Hereinafter, the arrangement of the first lens group 111 and the second lens group 112 applies mutatis mutandis to FIG. 3 .

5 is a cross-sectional view illustrating an arrangement structure of the lens assembly 110 according to various embodiments of the present disclosure. 6 is a cross-sectional view illustrating an arrangement relationship of the optical system structure 100 according to various embodiments of the present disclosure.

The lens assembly 110 and the optical system structure 100 shown in FIGS. 5 and 6 may be the same as a part or all of the optical system structure 100 including the lens assembly 110 shown in FIGS. 1 to 4 .

5 and 6 , an optical device according to one of various embodiments of the present disclosure may include a plurality of optical system structures 100 in which at least one lens assembly 110 is disposed. According to various embodiments, the lens assemblies 110a, 110b, and 110c in each of the optical system structures 100a, 100b, and 100c among the plurality of optical system structures 100 include a plurality of lenses having the same optical axis O'. a first lens group 111, a second lens group 112 including a plurality of lenses having the same or different optical axis O" as the first lens group 111, and the first lens group 111 and a refractive structure 113 disposed between the second lens group 112 .

According to various embodiments, the lens assembly 110 includes a first lens assembly 110a, a second lens assembly 110b disposed adjacent to the first lens assembly 110a, and the second lens assembly 110b. and a third lens assembly 110c disposed adjacent to the . Each of the lens assembly structures 110a, 110b, and 110c constituting the optical system structures 100a, 100b, and 100c may be partially or entirely the same as the lens assembly structure of FIG. 1 .

According to various embodiments, the first lens group 111 disposed in each of the first to third lens assemblies 110a, 110b, and 110c has a positive refractive power or a negative refractive power. may have, and the second lens group 112 may have a positive refractive power.

Referring to FIG. 5 , a circle A having a radius a connecting the vertices of the outermost lenses of each first lens group 111 (eg, the first lenses 111a of FIG. 1 ), each of the A circle B having a radius b connecting the centers of the refracting surfaces 113a of the refractive structure 113 may be defined as a circle C having a radius c connecting the centers of the upper surfaces of the respective image sensors. According to the above definition, the structure of the lens assembly includes a first lens group 111 in the lens assembly 110 such that each of the circles A, B, and C has a radius value a>c>b; The second lens group 112 and the refractive structure 113 may be disposed.

According to the above definition, according to various embodiments, the optical axis O″ of each of the second lens groups 112 is the optical axis O of the three first lens groups 111 arranged on the same plane. ') may be arranged so as to be in contact with one circle C having a radius of the distance from the point O to the curved surface 113a of the curved structure 113.

According to various embodiments, the optical axis O' of the three first lens groups 111 is disposed on the same plane, and the optical axis O' adjacent to each optical axis O' meeting at a point O is The angle formed by ') may be 120 degrees. For example, the optical axis O' of the first lens group 111 of the first lens assembly 110a, the optical axis O' of the first lens group 111 of the second lens assembly 110b, and the third The optical axes O' of the first lens group 111 of the lens assembly 110c may be disposed on the same plane and form an intersection point O at one point. An angle between the optical axis O' of the first lens group 111 of the first lens assembly 110a and the optical axis O' of the first lens group 111 of the second lens assembly 110b is 120 In the figure, the optical axis O' of the first lens group 111 of the second lens assembly 110b and the optical axis O' of the first lens group 111 of the third lens assembly 110c form The angle is 120 degrees, the optical axis O' of the first lens group 111 of the third lens assembly 110c and the optical axis O' of the first lens group 111 of the first lens assembly 110a ) may be 120 degrees.

As another example, the optical axis O′ of each of the first lens groups 111 may form 30 degrees with the optical axis O″ of the second lens group 112 of the adjacent lens assembly structure. For example, the optical axis O' of the first lens group 111 of the first lens assembly 110a is the optical axis O' of the second lens group 112 of the second lens assembly 110b or the third lens It may form an angle of 30 degrees with the optical axis O″ of the second lens group 112 of the assembly 110c. As another example, the optical axis of the first lens group 111 of the second lens assembly 110b ( O') is an angle of 30 degrees with the optical axis O″ of the second lens group 112 of the first lens assembly 110a or the optical axis O″ of the second lens group 112 of the third lens assembly 110. can achieve

According to various embodiments, the optical system structure 100 may include three image sensors 114 disposed to face the second lens groups 112 , respectively. As another example, it may include three heat dissipation structures 130 disposed to face each of the image sensors 114 . At least a portion of the heat dissipation structure 130 may be disposed between the circle A and the circle C when viewed from the upper side of the optical system structure 100 .

In the case of connecting or synthesizing images of signals received from the respective optical system structures 100 or image sensors 114 according to various embodiments, the left and right sides of one image sensor may be connected or synthesized with signals from adjacent image sensors. can For example, a left end region of one image sensor may be connected to a right end region of an adjacent image sensor, and a right end region of one image sensor may be connected to a left end region of an adjacent image sensor.

7 is a cross-sectional view illustrating an arrangement structure of one lens assembly 110 according to various embodiments of the present disclosure. 8 is a cross-sectional view in which the structure of the lens assembly 110 of FIG. 7 is sequentially arranged on a straight line, according to various embodiments of the present disclosure.

The structure of the lens assembly 110 shown in FIGS. 7 and 8 may be the same as a part or all of the optical system structure 100 including the lens assembly 110 shown in FIGS. 1 to 6 .

7 and 8 , an optical device according to one of various embodiments of the present disclosure may include a plurality of optical system structures 100 in which at least one lens assembly 110 is disposed.

According to various embodiments, the lens assembly 110 in each optical system structure among the plurality of optical system structures includes a first lens including a plurality of lenses 111a , 111b , 111c and 111d having the same optical axis O'. A group 111, a second lens group 112 including a plurality of lenses 112a, 112b, and 112c having the same or different optical axes as the first lens group 111, and the first lens group 111 and a refractive structure 113 disposed between the second lens group 112 . One lens assembly 110 shown in FIGS. 7 and 8 may be one of the plurality of lens assemblies of FIG. 5 , and the other lens assemblies have the same structure as the one lens assembly 110 .

According to various embodiments, the one lens assembly 110 is disposed from the subject side into the first lens group 111 , the refractive structure 113 and the second lens group 112 , and the following [mathematics] By satisfying Equation 1], [Equation 2] and/or [Equation 3], it is possible to have good optical properties while being miniaturized.

Here, EffD_ReflctS may indicate an effective diameter of the refracting surface 113a of the refractive structure 113 , F may indicate a focal length of the lens assembly, and Y may indicate an image height at a maximum angle of view. In addition, D1 may mean the distance from the entrance pupil of the optical system to the refracting surface 113a of the optical path refraction structure 113, and Drear may mean the distance from the refracting surface 113a of the optical path bending structure 113 to the image surface. .

According to an embodiment, when manufacturing the lens assembly 110 within the range satisfying Equation 1, the refractive structure suppresses an increase in the overall length and outer diameter of the first lens group 111 and bends the optical path By reducing the size of 113 , optical characteristics (eg, aberration characteristics, wide-angle characteristics, and/or brightness characteristics) of the lens assembly 110 may be satisfactorily secured.

According to an embodiment, when manufacturing the lens assembly 110 within the range satisfying Equation 2, the size of D1 is limited according to the above equation, thereby increasing the degree of freedom in disposing the lens assembly, and the lens assembly By reducing the optical path difference between the lenses, optical characteristics (eg, aberration characteristics, wide-angle characteristics, and/or brightness characteristics) of the lens assembly 110 may be satisfactorily secured.

According to an embodiment, when the lens assembly 110 within the range satisfying Equation 3 is manufactured, the optical properties of the lens assembly 110 advantageous to the angle of view and the sensitivity may be satisfactorily secured. For example, if it is adjusted to a value below the lower limit of D1 / F, it may be possible to reduce the size of D1. When the value is adjusted to a value above the upper limit of D1/F, there may be disadvantages in that the sensitivity is lowered and the path difference between optical systems can be increased.

According to various embodiments, the one lens assembly 110 is disposed as the first lens group 111 , the refractive structure 113 and the second lens group 112 from the subject side, and the following [mathematics] By satisfying Equation 4], [Equation 5] and/or [Equation 6], it is possible to have good optical properties while being miniaturized.

Here, F is the focal length of the entire lens assembly, Dfront is the distance from the object-side vertex of the first lens group 111 to the refractive surface 113a of the optical path refraction structure 113, and Drear is the optical path refraction structure (113) may mean a distance from the refracting surface 113a to the upper surface.

In addition, CA1st is the effective diameter of the subject-side surface of the first lens group 111, D1 is the distance from the entrance pupil of the lens assembly to the refracting surface 113a of the optical path bending structure 113, and Y is the maximum It may mean the image consideration in the angle of view.

According to an embodiment, when the lens assembly 110 within a range satisfying Equation 4 is manufactured, optical properties of the lens assembly 110 advantageous for an angle of view and sensitivity may be satisfactorily secured. For example, when it is adjusted to a value below the lower limit of Drear / F, it is difficult to maintain a large angle of view, there are disadvantages that sensitivity is increased, and when the value is adjusted to a value above the upper limit of Drear / F, the second lens The horizontal angle of view may be blocked by the group 112 and the image sensor 114 .

According to an embodiment, when the lens assembly 110 in the range satisfying Equation 5 is manufactured, the size of the lenses and the parallax of the lenses (eg, the structure of the three lens assemblies) are optimized, so that the The optical properties of the lens assembly 110 may be satisfactory. For example, when the value is adjusted to a value below the lower limit of Dfront / Drear, the size of the entire structure may increase and parallax may increase, and if the value is adjusted to a value above the upper limit of Dfront / Drear, the first lens group ( 111) may be increased, and the size and parallax of the entire structure may be increased.

According to an embodiment, when the lens assembly 110 in the range satisfying Equation 6 is manufactured, the size of the lenses and the parallax of the lenses (eg, the structure of the three lens assemblies) are optimized, so that the The optical properties of the lens assembly 110 may be satisfactory. For example, when the sqrt[{(CA1st/2)^2+D1^2}/{ Drear^2+Y^2}] value is adjusted to a value below the lower limit, the size of the entire structure increases and the parallax increases If the sqrt[{(CA1st/2)^2+D1^2}/{ Drear^2+Y^2}] is adjusted to a value above the upper limit, the lens of the first lens group 111 As the scene becomes larger, the size and parallax of the entire structure may increase.

According to various embodiments, the one lens assembly 110 is connected to the first lens group 111 , the refractive structure 113 , the second lens group 112 , and the image sensor 114 from the subject side. is disposed, and by satisfying the following [Equation 7] and/or [Equation 8], it is possible to have good optical properties while being miniaturized.

Here, the FOV_hori may refer to an angle of view of the short side image height of the image sensor 114 , and the FOV_virt may refer to an angle of view of the long side image height of the image sensor 114 .

According to an embodiment, when the lens assembly 110 within the range satisfying Equation 7 is manufactured, the optical properties of the lens assembly 110 may be satisfactorily secured. For example, the horizontal angle of view FOV_hori in the above range may be appropriately formed with a blending area according to the arrangement of the three lens assemblies in the horizontal direction.

According to an embodiment, when the lens assembly 110 within a range satisfying Equation 8 is manufactured, the optical properties of the lens assembly 110 may be satisfactorily secured. For example, in the vertical field of view FOV_virt in the above range, a blind spot may be removed according to the arrangement of the three lens assemblies in the vertical direction, so that good optical properties may be secured.

9 is a graph illustrating a resolution deviation of the arrangement structure of the lens assembly of FIGS. 7 and 8 according to various embodiments of the present disclosure;

According to various embodiments, the one lens assembly 110 is connected to the first lens group 111 , the refractive structure 113 , the second lens group 112 , and the image sensor 114 from the subject side. is disposed, and by satisfying the following [Equation 9], it can have good optical properties.

Here, the FOV denotes a maximum angle of view, and dY/dθ(θ) denotes a first-order differential function with respect to θ with respect to a function Y=f(θ) indicating the relationship between the angle of view (θ) and the image height (Y). can do.

Referring to FIG. 9 , when (dY/dθ)(θ)/(dY/dθ)(0) satisfies the corresponding range in the mapping function-related equation, it is possible to reduce the resolution deviation for each region.

[Table 1] below describes the lens data of the lens assembly 110, and 'S1 to S20' are related lenses (the first lens group 111 and the second lens group 112) and/or refraction. may indicate the refractive surface 113a of the structure 113 . The lens assembly 110 may satisfy the aforementioned conditions (and/or at least one of the aforementioned conditions) while having an F-number of 0.85, a half-angle of view of 180 degrees, and a focal length of 1.95 mm.

[Table 2] below describes the aspheric coefficients of the plurality of lenses of the first lens group 111 and the second lens group 112, and the aspherical coefficient can be calculated through the following [Equation 10] there is.

Here, 'Z' is the distance from the vertex of the lens in the optical axis direction, 'C' is the basic curvature of the lens, 'Y' is the distance in the direction perpendicular to the optical axis, and 'K' is the conic constant. 'a', 'b', 'c', 'd', and 'e' may mean aspheric coefficients, respectively.

10A is a graph illustrating spherical aberration of the lens assembly 110 according to one of various embodiments of the present disclosure.

In FIG. 10A , the horizontal axis represents the coefficient of the longitudinal spherical aberration, and the vertical axis represents the normalized distance from the center of the optical axis, and the change of the longitudinal spherical aberration according to the wavelength of light is shown.

10B is a graph illustrating astigmatism of the lens assembly 110 according to one of various embodiments of the present disclosure.

In FIG. 10B , the astigmatism of the lens assembly 100 is a result obtained at a wavelength of 546.074 nm. A solid line indicates astigmatism in a tangential direction, and a dotted line indicates astigmatism in a sagittal direction. .

10C is a graph illustrating a distortion rate of the lens assembly 110 according to one of various embodiments of the present disclosure.

Referring to FIG. 10C , in the image photographed through the lens assembly 110, although some distortion occurs at a point deviating from the optical axis, such distortion is generally at a level that can be seen in an optical device using a lens. , the distortion ratio is less than 1%, so that good optical properties can be provided.

11 is a cross-sectional view illustrating an arrangement structure of one lens assembly 210 according to various embodiments of the present disclosure. 12 is a graph illustrating spherical aberration, astigmatism, and distortion of the structure of the lens assembly 210 of FIG. 11 according to various embodiments of the present disclosure.

The structure of the lens assembly 210 illustrated in FIGS. 11 and 12 may be the same as a part or all of the optical system structure 100 including the lens assembly 110 illustrated in FIGS. 1 to 6 .

11 and 12 , an optical device according to one of various embodiments of the present disclosure may include a plurality of optical system structures in which at least one lens assembly 210 is disposed.

According to various embodiments, the lens assembly 210 in each optical system structure among the plurality of optical system structures includes a first lens group 211 including a plurality of lenses having the same optical axis, the first lens group 211 and A second lens group 212 including a plurality of lenses having the same or different optical axes and a refractive structure 213 disposed between the first lens group 211 and the second lens group 212 may be included. there is.

[Table 3] below describes the lens data of the lens assembly 210, and 'S1 to S21' are related lenses (the first lens group 211 and the second lens group 212) and/or refraction. may indicate the refractive surface 213a of the structure 213 . The lens assembly 210 may satisfy the above-mentioned conditions (and/or at least one of the above-mentioned conditions) while having an F-number of 0.72, a half-angle of view of 195 degrees, and a focal length of 2.06 mm.

[Table 4] below describes the aspherical coefficients of the plurality of lenses of the first lens group 211 and the second lens group 212, and the aspherical coefficients are calculated through the following [Equation 10]. can

12A is a graph illustrating spherical aberration of a lens assembly 210 according to one of various embodiments of the present disclosure.

In FIG. 12A , the horizontal axis represents the coefficient of the longitudinal spherical aberration, and the vertical axis represents the normalized distance from the center of the optical axis, and the change of the longitudinal spherical aberration according to the wavelength of light is shown.

12B is a graph illustrating astigmatism of the lens assembly 210 according to one of various embodiments of the present disclosure.

In FIG. 12B , the astigmatism of the lens assembly 200 is a result obtained at a wavelength of 546.074 nm. A solid line indicates astigmatism in a tangential direction, and a dotted line indicates astigmatism in a saggital direction. .

12C is a graph illustrating a distortion rate of the lens assembly 210 according to one of various embodiments of the present disclosure.

Referring to FIG. 12C , although some distortion occurs in the image taken through the lens assembly 210 at a point deviating from the optical axis, such distortion is generally at a level that can be seen in an optical device using a lens. , the distortion ratio is less than 1%, so that good optical properties can be provided.

13 is a cross-sectional view illustrating an arrangement structure of one lens assembly 310 according to various embodiments of the present disclosure. 14 is a graph illustrating spherical aberration, astigmatism, and distortion of the structure of the lens assembly 310 of FIG. 13 according to various embodiments of the present disclosure.

The structure of the lens assembly 310 shown in FIGS. 13 and 14 may be the same as a part or all of the optical system structure 100 including the lens assembly 110 shown in FIGS. 1 to 6 .

13 and 14 , an optical device according to one of various embodiments of the present disclosure may include a plurality of optical system structures in which at least one lens assembly 310 is disposed.

According to various embodiments, the lens assembly 310 in each optical system structure among the plurality of optical system structures includes a first lens group 311 including a plurality of lenses having the same optical axis, the first lens group 311 and A second lens group 312 including a plurality of lenses having the same or different optical axes and a refractive structure 313 disposed between the first lens group 311 and the second lens group 312 may be included. there is.

[Table 5] below describes the lens data of the lens assembly 310, and 'S1 to S22' are related lenses (the first lens group 311 and the second lens group 312) and/or refraction. may indicate the refractive surface 313a of the structure 313 . The lens assembly 310 may satisfy the above-mentioned conditions (and/or at least one of the above-mentioned conditions) while having an F-number of 1.09, a half angle of view of 200 degrees, and a focal length of 2.27 mm.

[Table 6] below describes the aspheric coefficients of the plurality of lenses of the first lens group 311 and the second lens group 312, and the aspherical coefficient is calculated through the following [Equation 10]. can

14A is a graph illustrating spherical aberration of a lens assembly 310 according to one of various embodiments of the present disclosure.

In FIG. 14A , the horizontal axis represents the coefficient of the longitudinal spherical aberration, and the vertical axis represents the normalized distance from the center of the optical axis, and the change of the longitudinal spherical aberration according to the wavelength of light is shown.

14B is a graph illustrating astigmatism of the lens assembly 310 according to one of various embodiments of the present disclosure.

In FIG. 14B , the astigmatism of the lens assembly 300 is a result obtained at a wavelength of 546.074 nm. A solid line indicates astigmatism in a tangential direction, and a dotted line indicates astigmatism in a saggital direction. .

14C is a graph illustrating a distortion rate of the lens assembly 310 according to one of various embodiments of the present disclosure.

Referring to FIG. 14C , in the image photographed through the lens assembly 310, although some distortion occurs at a point deviating from the optical axis, such distortion is generally at a level that can be seen in an optical device using a lens. , the distortion ratio is less than 1%, so that good optical properties can be provided.

15 is a cross-sectional view illustrating an arrangement structure of one lens assembly 410 according to various embodiments of the present disclosure. 16 is a graph illustrating spherical aberration, astigmatism, and distortion of the structure of the lens assembly 410 of FIG. 15 according to various embodiments of the present disclosure.

The structure of the lens assembly 410 shown in FIGS. 15 and 16 may be the same as a part or all of the optical system structure 100 including the lens assembly 110 shown in FIGS. 1 to 6 .

15 and 16 , an optical device according to one of various embodiments of the present disclosure may include a plurality of optical system structures in which at least one lens assembly 410 is disposed.

According to various embodiments, the lens assembly 410 in each optical system structure among the plurality of optical system structures includes a first lens group 411 including a plurality of lenses having the same optical axis, the first lens group 411 and A second lens group 412 including a plurality of lenses having the same or different optical axes and a refractive structure 413 disposed between the first lens group 411 and the second lens group 412 may be included. there is.

[Table 7] below describes the lens data of the lens assembly 410, where 'S1 to S20' are related lenses (the first lens group 411 and the second lens group 412) and/or refraction may indicate the refractive surface 413a of the structure 413 . The lens assembly 410 may satisfy the aforementioned conditions (and/or at least one of the aforementioned conditions) while having an F-number of 0.85, a half-angle of view of 180 degrees, and a focal length of 1.95 mm.

[Table 8] below describes the aspherical coefficients of the plurality of lenses of the first lens group 411 and the second lens group 412, and the aspherical coefficient is calculated through the following [Equation 10]. can

16A is a graph illustrating spherical aberration of a lens assembly 410 according to one of various embodiments of the present disclosure.

In FIG. 16A , the horizontal axis represents the coefficient of the longitudinal spherical aberration, and the vertical axis represents the normalized distance from the center of the optical axis, and the change of the longitudinal spherical aberration according to the wavelength of light is shown.

16B is a graph illustrating astigmatism of the lens assembly 410 according to one of various embodiments of the present disclosure.

In FIG. 16B , the astigmatism of the lens assembly 400 is a result obtained at a wavelength of 546.074 nm. A solid line indicates astigmatism in a tangential direction, and a dotted line indicates astigmatism in a saggital direction. .

16C is a graph illustrating a distortion rate of the lens assembly 410 according to one of various embodiments of the present disclosure.

Referring to FIG. 16C , in the image taken through the lens assembly 410, although some distortion occurs at a point deviating from the optical axis, such distortion is generally at a level that can be seen in an optical device using a lens. , the distortion ratio is less than 1%, so that good optical properties can be provided.

The following [Table 9] shows the lens assembly of the embodiments (FIGS. 7(EX1), 11(EX2), 13(EX3), and 14(EX4)) in the above [Equation 1-9] It is the value for the conditional expression to be applied.

17 is a top plan view illustrating an optical device 510 including a plurality of lens assemblies according to various embodiments of the present disclosure.

Referring to FIG. 17 , an optical device 510 according to one of various embodiments of the present disclosure may include a plurality of optical system structures in which at least one lens assembly is disposed.

According to various embodiments, each of the lens assemblies 510a, 510b, and 510c of the optical device 510 includes a first lens group 511 including a plurality of lenses having the same optical axis F′, and the A second lens group 512 including a plurality of lenses having the same optical axis F′ as the first lens group 511 and an image sensor 514 may be included.

According to various embodiments, the first lens group 511 may include a plurality of lenses 511a and 511b having the same optical axis F′. For example, the plurality of lenses 511a and 511b may include a first lens 511a and a second lens 511a sequentially arranged from the subject side to the image sensor 514 . Each of the first and second lenses 511a and 511b may include a plastic lens, and are optically aligned with one surface of the image sensor 514 to form one optical axis F' of the lens assembly. can be placed.

According to various embodiments, the second lens group 512 may include a plurality of lenses 512a, 512b, 512c, and 512d having the same optical axis F′ as that of the first lens group 511 . The second lens group 512 has a smaller size than the first lens group 511 , and may be disposed between the first lens group 511 and the image sensor 514 . For example, the plurality of lenses 512a, 512b, 512c, and 512d may include a third lens 512a, a fourth lens 512b, and a fifth sequentially arranged to face the image sensor 514 from the subject side. It may include a lens 512c and a sixth lens 512d. Each of the third to sixth lenses 512a, 512b, 512c, and 512d may include a plastic lens, and one surface and an optical axis of the image sensor 514 to form one optical axis F' of the lens assembly. It may be arranged in an aligned state.

The overall length of the lens assembly may be reduced as a distance (eg, an air gap) between each of the plurality of lenses of the first to second lens groups 511 and 512 is smaller. According to various embodiments, the distance between the lenses may be designed in various ways according to optical characteristics (eg, aberration characteristics, wide-angle characteristics, and/or brightness characteristics) required for the lens assembly. According to various embodiments, the lens assembly may include an image sensor 514 disposed to face the second lens group 512 .

According to various embodiments, the lens assembly may include an aperture (not shown) disposed on one surface of the first lens 511a facing the subject. By adjusting the size of the aperture, the amount of light reaching the imaging surface 514a of the image sensor 514 may be adjusted.

According to various embodiments, the optical device 510 may further include an infrared cut filter (not shown) disposed between the sixth lens 512d and the image sensor 514 . The infrared cut filter may block light, for example, infrared light, which is invisible to the human eye but detected by a film of an optical device or an image sensor. For example, the infrared cut-off filter may be installed to make the color of an image detected and photographed by the image sensor 514 close to the color that a person feels when he sees an actual object.

According to various embodiments, the lens assembly constituting the optical device 510 includes a first lens assembly 510a, a second lens assembly 520b disposed adjacent to the first lens assembly 510a, and the second lens assembly 510a. A third lens assembly 510c disposed adjacent to the lens assembly 510b may be included. Each lens assembly constituting the optical device may be identical to each other.

According to various embodiments, the lens assembly constituting the optical device 510 includes n or more identical lens assembly structures, and the optical axis f′ of each lens group of the lens assembly is disposed on the same plane. can As another example, the line segment connecting the intersection point e' where the lines extending the respective optical axes f' meet may form a regular n-gon. For example, the optical axes f' of the three identical first lens assemblies 510a, second lens assemblies 510b, and third lens assemblies 510c constituting the optical device 510 are coplanar. and a line segment connecting an intersection point e' where lines extending from each of the optical axes f' meet may form an equilateral triangle.

According to various embodiments, the upper surface of each image sensor 514 of the structure of each lens assembly 510a, 510b, 510c constituting the optical device may be formed at an angle d' of 360°/n. can For example, a separate image sensor 514 is provided on one side of the same three first lens assembly 510a, second lens assembly 510b, and third lens assembly 510c constituting the optical device 510 . can be placed. The upper surfaces of the three image sensors 514 may be disposed at 120 degrees. An angle between the first image sensor 514 of the first lens assembly 510a and the upper surface of the second image sensor 514 of the second assembly 510b disposed adjacent thereto may be 120 degrees.

According to various embodiments, the optical axis f' of each of the lens assemblies 510a, 510b, and 510c has an intersection point e' at the intersection with the optical axis of the adjacent lens assembly, and the intersection point e' of the optical axis The number may be the same as the number of optical system structures including the lens assembly, and the optical axis may be disposed at an angle of 180(n-2)/n. For example, the optical axis f' of the first lens assembly 510a may have three intersection points that intersect the optical axis f' of the second lens assembly 510b or the third lens assembly 510c. there is. As another example, the optical axis may be disposed at an angle of 180(3-2)/3=60 degrees to the adjacent optical axis.

According to various embodiments, the arrangement structure of the plurality of lens assemblies) may reduce a difference in resolution between the center and the periphery of the image sensor 514 , regardless of the size of each lens assembly and/or the size of the entire optical device The parallax distance can be implemented to a minimum. The arrangement structure of the plurality of lens assemblies can solve the stitching problem of the captured image (problems such as image cutoff at the angle of view where the two camera modules overlap) caused by the parallax distance, and the sensitivity of the optical device can be designed to be low there is.

18 is a top plan view illustrating an optical device 610 including a plurality of lens assemblies according to various embodiments of the present disclosure. The structure of the lens assembly shown in FIG. 18 may be the same as part or all of the structure of the lens assembly shown in FIG. 17 .

Referring to FIG. 18 , an optical device 610 according to one of various embodiments of the present disclosure may include a plurality of optical system structures in which at least one lens assembly is disposed.

Each lens assembly 610a , 610b , and 610c of the optical device 610 according to various embodiments of the present disclosure includes a first lens group 611 including a plurality of lenses having the same optical axis F′; A second lens group 612 including a plurality of lenses having the same optical axis F′ as the first lens group 611 and an image sensor 614 may be included.

According to various embodiments, the lens assembly structure constituting the optical device 610 includes a first lens assembly 610a, a second lens assembly 610b disposed adjacent to the first lens assembly 610a, and the second lens assembly 610a. It may include a third lens assembly 610c disposed adjacent to the second lens assembly 610b and a fourth lens assembly 610d disposed adjacent to the third lens assembly 610c. Each lens assembly constituting the optical device may be identical to each other.

According to various embodiments, there are four lens assemblies constituting the optical device 610, and the same four first lens assemblies 610a, second lens assemblies 610b, and third constituting the optical device are identical. Each optical axis f' of the lens assembly 610c and the fourth lens assembly is disposed on the same plane, and the line segment connecting the intersection point e' where the lines extending the respective optical axes f' meet It can form a square.

According to various embodiments, of the same four first lens assembly 610a, second lens assembly 610b, third lens assembly 610c, and fourth lens assembly 610d constituting the optical device 610, A separate image sensor 614 may be disposed on one side. The upper surfaces of the four image sensors 614 may be disposed at 90 degrees. For example, the angle between the first image sensor 614 of the first lens assembly 610a and the upper surface of the second image sensor 614 of the second lens assembly 610b disposed adjacent thereto is 90 degrees. can

According to various embodiments, the optical axis f' of each lens assembly intersects with the optical axis f' of an adjacent lens assembly has an intersection point e', and the intersection point e' of the optical axis f' The number of may be the same as the number of optical system structures including the lens assembly, and the optical axis may be disposed at an angle of 180(n-2)/n. For example, the optical axis f' of the first lens assembly 610a may have three intersection points that intersect the optical axis f' of the second lens assembly 610b or the third lens assembly 610c. there is. As another example, the optical axis f' may be disposed at an angle of 180(3-2)/3=60 degrees to the adjacent optical axis f'.

According to various embodiments, the arrangement structure of the plurality of lens assemblies can reduce the difference in resolution between the center and the periphery of the image sensor, and minimize the parallax distance regardless of the size of each lens assembly and/or the size of the entire optical device. can be implemented with

19 is a cross-sectional view illustrating an optical device 710 including a plurality of lens assemblies according to various embodiments of the present disclosure. The structure of the lens assembly shown in FIG. 19 may be the same as a part or all of the structure of the optical system including the lens assembly shown in FIG. 17 .

Referring to FIG. 19 , the optical device 710 according to one of various embodiments of the present disclosure may include a plurality of optical system structures in which at least one lens assembly 710a , 710b , and 710c is disposed.

Each of the lens assemblies 710a, 710b, and 710c of the optical device 710 according to various embodiments includes a first lens group 711 including a plurality of lenses having the same optical axis f′, and the A second lens group 712 including a plurality of lenses having the same optical axis f′ as the first lens group 711 and an image sensor 714 may be included.

According to various embodiments, each lens assembly among the plurality of lens assembly structures includes a first lens assembly 710a, a second lens assembly 710b disposed adjacent to the first lens assembly 710a, and the second lens assembly 710a. A third lens assembly 710c disposed adjacent to the lens assembly 710b may be included. Each lens assembly constituting the optical device ( ) may be identical to each other.

According to various embodiments, in a regular polygon composed of points at which the optical axes f' of each lens assembly intersect, n is an image top surface from the image top surface of the image sensor 714 on the hypotenuse formed by one optical axis f'. It means the distance to the vertex of the front side, and m may mean the distance from the image upper surface of the image sensor 714 on the hypotenuse formed by one optical axis to the vertex of the rear image upper surface.

According to the above definition, if m = n in the line segment l connecting the intersection point e', the distance b' between the centers of the image surface of the image sensor 714 of the lens assembly structure or the extension line of the image image surface is Even if the distance a' from the intersecting point o' to the image upper surface varies, the parallax distance c' of each lens assembly may not be changed.

As another example, if m<n in the line segment l connecting the intersection point e', the disparity distance c' may be reduced according to the ratio of m and n, and the intersection point e' may be connected If m>n in one line segment l, the parallax distance c' may increase according to the ratio of m and n.

The arrangement structure of the plurality of lens assemblies can solve the stitching problem of the captured image (problems such as image cutoff at the angle of view where the two camera modules overlap) caused by the parallax distance, and the sensitivity of the optical device can be designed to be low there is.

20 is a top plan view illustrating an optical device 710 including a plurality of lens assemblies including a heat dissipation structure 730 according to various embodiments of the present disclosure. The structure of the lens assembly shown in FIG. 20 may be the same as part or all of the structure of the optical system including the lens assembly shown in FIG. 19 .

Referring to FIG. 20 , an optical device 710 according to one of various embodiments of the present disclosure may include a plurality of optical system structures in which at least one lens assembly is disposed.

According to various embodiments, each of the lens assemblies 710a , 710b , and 710c among the plurality of lens assembly structures includes a first lens group 711 including a plurality of lenses having the same optical axis f′, and the A second lens group 712 including a plurality of lenses having the same optical axis f′ as the first lens group 711 and an image sensor 714 may be included.

According to various embodiments, the optical device 710 may include a heat dissipation structure 730 disposed in an upper or lower region of the lens assembly. The heat dissipation structure 730 is a regular polygon consisting of a circle (h') connecting the vertices of the outermost lenses of each of the lens assemblies 710a, 710b, and 710c and the optical axis of each of the lens assemblies 710a, 710b, and 710c. It may be disposed between (g'), and may dissipate heat generated by the image sensors 714 .

According to various embodiments, the heat dissipation structure 730 may include, for example, a heat pipe, a solid heat dissipation sheet, or a liquid heat dissipation paint. Here, the material of the heat pipe, the solid heat dissipation sheet, or the liquid heat dissipation paint may include, for example, a high heat conductive material such as graphite, carbon nanotubes, a natural regenerated material, silicon, or silicon. As another example, the heat dissipation structure 730 may include a metal material, and may include, for example, Al or Mg. Since the metal material has heat diffusion performance, it enables additional heat distribution.

According to various embodiments, the heat dissipation structure 730 is formed to have a size encompassing the plurality of image sensors 714 , and is in contact with the plurality of image sensors 714 or has a predetermined gap therebetween. It can be placed face to face. The heat generated by the image sensor 714 may be diffused and evenly distributed over the entire surface of the heat dissipation structure 730 , and then may be radiated to the outside.

The optical device including the heat dissipation structure 730 according to an embodiment of the present invention can suppress image deterioration due to heat of the image sensor 714 when shooting a video for a long time, and the configuration of some optical devices (sensor is inside arrangement), at least a portion of the image sensor 714 is disposed as an outer shell, so that heat can be efficiently dissipated.

In the lens assembly structure including a plurality of lens assemblies according to various embodiments of the present disclosure, at least some of the plurality of lens assemblies include a first lens having a positive refractive power or a negative refractive power. army; a second lens group having positive refractive power; and a bending structure for bending a path of light of the first lens group, wherein the bending structure is disposed on a path of light of the first lens group and a path of light of the second lens group, The optical axes of the first lens groups disposed in each of the lens assemblies may meet at a point, and the optical axes of the second lens groups disposed in each of the at least some lens assemblies may form a triangle.

According to various embodiments, the lens assembly is disposed from the subject side to the first lens group, the curved structure, and the second lens group, and the following [Conditional Expression 1], [Conditional Expression 2], and [Conditional Expression 3] are respectively can be satisfied

[Conditional Expression 1] (EffD_ReflctS^2)/(F * 2Y) < 3.0

[Conditional Expression 2] D1 / Drear < 1.0

[Conditional Expression 3] 5 < D1 / F < 10

Here, EffD_ReflctS is the effective diameter of the curved surface of the curved structure, F is the focal length of the entire lens assembly structure, Y is the image height at the maximum angle of view, and D1 is the distance from the entrance pupil of the lens assembly to the curved surface of the optical path curved structure. The distance, the Drear, means the distance from the curved surface of the optical path curved structure to the upper surface.

According to various embodiments, an angle formed by an optical axis of the first lens groups disposed in each of the lens assemblies is 120 degrees, and an angle formed by an optical axis of the second lens groups disposed in each of the lens assemblies is 60 degrees , and the optical axis of the second lens groups disposed in each of the lens assemblies may form an equilateral triangle.

According to various embodiments, the lens assembly is disposed in the first lens group, the curved structure, and the second lens group from the subject side, and the following [Conditional Expression 4], [Conditional Expression 5], and [Conditional Expression 6] are respectively can be satisfied

[Conditional Expression 4] 6 < Drear / F < 11

[Conditional Expression 5] 0.9 < Dfront / Drear < 1.4

[Conditional Expression 6] 0.8 < sqrt[{(CA1st/2)^2+D1^2}/{ Drear^2+Y^2}] < 1.2

Here, F is the focal length of the entire lens assembly, Dfront is the distance from the object-side vertex of the first lens group to the curved surface of the optical path bending structure, Drear is the distance from the curved surface of the optical path curved structure to the image surface, and CA1st is the effective diameter of the outermost object side surface of the first lens group, D1 is the distance from the entrance pupil of the lens assembly to the curved surface of the optical path bending structure, and Y is the image height at the maximum angle of view.

According to various embodiments of the present disclosure, the lens assembly is disposed in the first lens group, the curved structure, and the second lens group from the subject side, and the following [Conditional Expression 7] may be satisfied.

[Conditional Expression 7] 0.7 < (dY/dθ)(θ)/(dY/dθ)(0) < 1.3, provided that 0 ≤ θ ≤ (FOV/2)

Here, the FOV is the maximum angle of view, and dY/dθ(θ) represents a first-order differential function with respect to θ with respect to a function Y=f(θ) indicating the relationship between the angle of view (θ) and the image height (Y).

According to various embodiments, the first lens group of the lens assembly includes a plurality of lenses, wherein the plurality of lenses include: a first lens having a negative refractive power; a second lens having a negative refractive power; a third lens having a negative refractive power; and a fourth lens having positive refractive power.

According to various embodiments, the first lens group of the lens assembly includes a plurality of lenses, and the plurality of lenses may include: lenses sequentially set to have a plurality of negative refractive powers from the subject side; and a lens having at least one positive refractive power.

According to various embodiments, the lens assembly includes a rectangular image sensor, and the image forming surface of the image sensor is disposed on the optical axis of the first lens groups disposed on each of the lens assemblies or on each of the lens assemblies A long side may be disposed in a direction perpendicular to a plane formed by an optical axis of the second lens group.

According to various embodiments, the lens assembly is disposed from the subject side to the first lens group, the curved structure, the second lens group, and the image sensor, and may satisfy the following [Conditional Expressions 8] and [Conditional Expressions 9], respectively. can

[Conditional Expression 8] 130 < FOV_hori < 150

[Conditional Expression 9] 185 < FOV_virt < 200

Here, the FOV_hori denotes an angle of view of the short-side image height of the image sensor, and the FOV_virt denotes an angle of view of the long-side image height of the image sensor.

According to various embodiments of the present disclosure, the lens assembly structure may further include a fourth lens assembly disposed above or below the three lens assemblies disposed on the same horizontal plane, and the optical axis of the lens group of the fourth lens assembly may include: It may be on a straight line that is perpendicular to the optical axis of the first lens groups disposed in each of the three lens assemblies and passes through a point where the first lens groups meet.

In an optical device including a plurality of optical system structures according to various embodiments of the present invention, at least some of the optical system structures of the plurality of optical system structures may include: a case having an open front surface; a lens assembly disposed in the case and including a first lens group composed of a combination of a plurality of lenses, a second lens group, and a bending structure for bending an optical path of the first lens group and transmitting the first lens group to the second lens group; and a seating part disposed in the case and configured to seat the first lens group or the second lens group, wherein the outermost lens of the first lens is exposed to the opening and disposed in each of the optical system structures The optical axes of the first lens groups may be perpendicular to the optical axes of the second lens groups.

A circle A set to have a radius a centered on the one point and connecting the vertices of the outermost lenses of each of the first lens groups at the one point; a circle B set to have a radius b centered on the one point and connecting the centers of the curved surfaces of the respective curved structures at the one point; and a circle C set to have a radius c centered at the one point and connecting the centers of the upper surfaces of the respective image sensors at the one point is formed, each of the circles has a radius value of a > c > b can have

According to various embodiments, the display device further includes an image sensor having a short side direction parallel to an optical axis of the first lens group, wherein optical axes of the first lens groups disposed in each of the optical system structures are disposed on the same plane, , an angle formed by each optical axis meeting at the one point with an adjacent optical axis may be 120 degrees, and the optical axis of each of the first lens groups may form 30 degrees with the optical axis of the second lens group of the adjacent optical system structure.

According to various embodiments, the optical system structure may further include a heat dissipation structure disposed between the circle A and the circle C and dissipating heat from the image sensor.

According to various embodiments, the first lens group may further include an optical axis adjustment structure arranged to form one axis on the optical axis, and for compensating for rotational errors of each of the lens structures and the respective image sensors. there is.

An optical device according to various embodiments of the present invention includes n or more identical optical system structures including a lens group (n ≥ 3), and the optical axis f' of each lens group of the optical system structures is on the same plane and a line segment connecting the intersection point e' where the lines extending the respective optical axes f' meet may form a regular n-gonal shape.

According to various embodiments, an image sensor is included on one side of the lens group, and when m=n in the line segment l connecting the intersection point e', the distance (b') between the centers of the image surfaces of the adjacent image sensors Alternatively, even if the distance (a') from a point (o') where the extension line of the image sensor meets the upper surface of the image sensor is variable, the parallax distance (c') of each lens group does not change, If m<n in the line segment (l) connecting the intersection point (e'), the parallax distance (c') decreases according to the ratio of m and n, and in the line segment (l) connecting the intersection point (e'), m> If n, the parallax distance c' may increase according to the ratio of m and n.

Here, n is the distance from the image upper surface of the image sensor on the hypotenuse formed by one optical axis f' to the vertex of the front side of the image upper surface, m is the image upper surface of the image sensor 714 on the hypotenuse formed by one optical axis represents the distance to the vertex of the back side of the image plane.

According to various embodiments, the upper surface of the image sensor of each optical system structure may form an angle d' of 360°/n.

According to various embodiments, the optical axis of each lens group crosses the optical axis of the adjacent lens group has an intersection point (e'), and the number of intersection points of the optical axis is the same as the number of optical system structures including the lens group, The optical axis may be disposed at an angle of 180(n-2)/n.

According to various embodiments, it is disposed between a circle (h') connecting the vertices of the outermost lenses of each lens group and a regular polygon (g') made of the optical axis of each lens group, and heat dissipation of the image sensor It may include a heat dissipation structure for

As mentioned above, although specific embodiments have been described in the detailed description of the present invention, it will be apparent to those of ordinary skill in the art that various modifications are possible without departing from the scope of the present invention.

Optics: 10
Optical system structure: 100
Lens assembly: 110
1st lens group: 111
Second lens group: 112
Refraction Structure: 113
Image sensor: 114
Case: 120
Heat dissipation structure: 130
First seating part: 141
Second seating part: 142
Support member: 151
Sealing member: 152

Claims (20)

A lens assembly structure comprising at least three lens assemblies,
Each of the at least three lens assemblies comprises:
a first lens group having a positive refractive power or a negative refractive power;
a second lens group having a positive refractive power; and
and a bending structure for bending a path of the light of the first lens group to correspond to an optical axis direction of the second lens group, wherein the bending structure is on the path of the light of the first lens group and the path of the light of the second lens group is placed in
three optical axes of the first lens groups disposed on each of the at least three lens assemblies meet at a point, and the three optical axes of the second lens groups disposed on each of the at least three lens assemblies form a triangle placed,
Each of the lens assemblies is disposed from the subject side to the first lens group, the curved structure, and the second lens group,
The lens assembly structure set to satisfy the following [Conditional Expression 1], [Condition Expression 2], and [Condition Expression 3], respectively.
[Conditional Expression 1] (EffD_ReflctS^2)/(F * 2Y) < 3.0
[Conditional Expression 2] D1 / Drear < 1.0
[Conditional Expression 3] 5 < D1 / F < 10
(The EffD_ReflctS is the effective diameter of the curved surface of the curved structure, F is the focal length of the entire lens assembly structure, Y is the image height at the maximum angle of view, and D1 is the distance from the entrance pupil of the lens assembly to the curved surface of the optical path curved structure. , the Drear represents the distance from the curved surface of the optical path curved structure to the upper surface)
delete The method of claim 1,
An angle formed by an optical axis of the first lens groups disposed in each of the at least three lens assemblies is 120 degrees, and an angle formed by an optical axis of the second lens groups disposed in each of the lens assemblies is 60 degrees,
An optical axis of the second lens groups disposed in each of the at least three lens assemblies forms an equilateral triangle.
The method of claim 1,
Each of the lens assemblies,
The lens assembly structure set to satisfy the following [Conditional Expression 4], [Conditional Expression 5], and [Conditional Expression 6], respectively.
[Conditional Expression 4] 6 < Drear / F < 11
[Conditional Expression 5] 0.9 < Dfront / Drear < 1.4
[Conditional Expression 6] 0.8 < sqrt[{(CA1st/2)^2+D1^2}/{ Drear^2+Y^2}] < 1.2
(Where F is the focal length of the entire lens assembly, Dfront is the distance from the object-side vertex of the first lens group to the curved surface of the optical path bending structure, Drear is the distance from the curved surface of the optical path bending structure to the image surface, the CA1st is the effective diameter of the outermost object-side surface of the first lens group, D1 is the distance from the entrance pupil of the lens assembly to the curved surface of the optical path bending structure, and Y is the image height at the maximum angle of view)
The method of claim 1,
Each of the lens assemblies,
The lens assembly structure set to satisfy the following [Conditional Expression 7].
[Conditional Expression 7] 0.7 < (dY/dθ)(θ)/(dY/dθ)(0) < 1.3, provided that 0 ≤ θ ≤ (FOV/2)
(The FOV is the maximum angle of view, and dY/dθ(θ) represents a first-order differential function with respect to θ with respect to Y=f(θ), a function representing the relationship between the angle of view (θ) and the image height (Y)
◈Claim 6 was abandoned when paying the registration fee.◈ The method of claim 1,
The first lens group includes a plurality of lenses, the plurality of lenses comprising:
a first lens having a negative refractive power;
a second lens having a negative refractive power;
a third lens having a negative refractive power; and
A lens assembly structure comprising a; a fourth lens having a positive refractive power.
◈Claim 7 was abandoned at the time of payment of the registration fee.◈ The method of claim 1,
The first lens group includes a plurality of lenses, the plurality of lenses comprising:
Lenses set to have a plurality of negative refractive power sequentially from the subject side; and
A lens assembly structure comprising a lens configured to have at least one positive refractive power.
The method of claim 1,
Each of the lens assemblies includes a rectangular image sensor,
The imaging surface of the image sensor may have a long side in a direction perpendicular to a plane formed by an optical axis of the first lens groups disposed in each of the lens assemblies or an optical axis of the second lens groups disposed in each of the lens assemblies. Set lens assembly structure.
9. The method of claim 8,
Each of the lens assemblies,
The lens assembly structure set to satisfy the following [Conditional Expression 8] and [Conditional Expression 9], respectively.
[Conditional Expression 8] 130 < FOV_hori < 150
[Conditional Expression 9] 185 < FOV_virt < 200
(The FOV_hori represents the angle of view of the short side image height of the image sensor, and the FOV_virt represents the field of view of the long side image height of the image sensor)
4. The method of claim 3,
Further comprising a fourth lens assembly disposed above or below each of the at least three lens assemblies disposed on the same horizontal plane,
An optical axis of the lens group of the fourth lens assembly is perpendicular to the optical axis of the first lens groups disposed in each of the at least three lens assemblies, and the lens assembly exists on a straight line passing through a point where the first lens groups meet. rescue.
An optical device comprising at least three optical system structures, comprising:
Each optical system structure of the at least three optical system structures,
Case with an open front;
a lens assembly disposed in the case and including a first lens group composed of a combination of a plurality of lenses, a second lens group, and a bending structure for bending an optical path of the first lens group and transmitting the first lens group to the second lens group; and
It is disposed in the case and includes a seating part for seating the first lens group or the second lens group,
The outermost lens of the first lens is exposed to the opening, and the optical axis of the first lens groups disposed in each of the optical system structures is set to form a vertical angle with the optical axis of the second lens group,
Each of the lens assemblies is disposed from the subject side to the first lens group, the curved structure, and the second lens group,
An optical device set to satisfy the following [Conditional Expression 1], [Conditional Expression 2], and [Conditional Expression 3], respectively.
[Conditional Expression 1] (EffD_ReflctS^2)/(F * 2Y) < 3.0
[Conditional Expression 2] D1 / Drear < 1.0
[Conditional Expression 3] 5 < D1 / F < 10
(The EffD_ReflctS is the effective diameter of the curved surface of the curved structure, F is the focal length of the entire lens assembly structure, Y is the image height at the maximum angle of view, and D1 is the distance from the entrance pupil of the lens assembly to the curved surface of the optical path curved structure. , the Drear represents the distance from the curved surface of the optical path curved structure to the upper surface)
12. The method of claim 11,
a circle A set to have a radius a centered at a point and connecting the vertices of the outermost lenses of each of the first lens groups at the one point;
a circle B set to have a radius b centered on the one point and connecting the centers of the curved surfaces of the respective curved structures at the one point; and
When a circle C set to have a radius c centered on the one point and connecting the centers of the upper surfaces of the respective image sensors at the one point is formed,
The optical device is set such that each of the circles has a radius value of a > c > b.
13. The method of claim 12,
Further comprising an image sensor having a short side direction parallel to the optical axis of the first lens group,
Optical axes of the first lens groups disposed in each of the optical system structures are disposed on the same plane, and an angle between each optical axis meeting at a point and an adjacent optical axis is 120 degrees, and the optical axis of each first lens group An optical device for forming an optical axis of the second lens group of an adjacent optical system structure at 30 degrees.
◈Claim 14 was abandoned at the time of payment of the registration fee.◈ 13. The method of claim 12,
and a heat dissipation structure disposed between the circle A and the circle C and dissipating heat from the image sensor.
◈Claim 15 was abandoned when paying the registration fee.◈ 14. The method of claim 13,
and an optical axis adjustment structure arranged to form one axis on the optical axis of the first lens group, and for compensating for a rotation error amount of each of the lens structures and the image sensor.
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